Unlevered vs Levered Free Cash Flow: IB Interview Guide
How UFCF and LFCF differ, which discount rate pairs with each, worked bridges from EBIT and net income, and the interview traps undergrads hit.
IB · 5 min read
Free cash flow sounds simple until an interviewer asks whether you mean unlevered or levered. That one word decides the discount rate, the output value, and whether your DCF is an enterprise value model or an equity value model. This is core IB technical vocabulary.
The short answer
"Unlevered free cash flow is cash available to all capital providers before debt service. I discount it at WACC to get enterprise value. Levered free cash flow is cash available to equity after interest and net debt flows. I discount it at cost of equity to get equity value. Mixing the pairings is a hard fail."
Definitions
Unlevered free cash flow (UFCF / FCFF) is cash flow available to all providers of capital before debt payments.
Levered free cash flow (LFCF / FCFE) is cash flow available to equity holders after interest and net debt flows.
Common UFCF bridge
UFCF = EBIT × (1 − t) + D&A − CapEx − ΔNWC
Common LFCF bridge
LFCF = Net Income + D&A − CapEx − ΔNWC − Net Debt Repayments + Net Debt Issuance (variants exist; state your definition)
State your definition out loud. Interviewers care less about which textbook variant you pick than about consistency with the discount rate and the claim you are valuing.
The pairing rule you must not break
| Cash flow | Discount rate | Value output |
|---|---|---|
| UFCF | WACC | Enterprise value |
| LFCF | Cost of equity | Equity value |
UFCF
WACC
→ Enterprise value
LFCF
Ke
→ Equity value
Start
EBIT
Unlevered path
Bridge
Net debt
EV to equity
Why IB interviews default to UFCF
Most teaching DCFs in banking interviews are unlevered:
- Project UFCF
- Discount at WACC
- Get enterprise value
- Subtract net debt (and other adjustments) to get equity value
- Divide by diluted shares
That keeps operating performance separate from capital structure in the forecast, then brings financing in through WACC and the EV-to-equity bridge. It is cleaner when leverage changes and when you want enterprise-value thinking.
When levered FCF shows up
- Equity valuation approaches that project cash to equity directly
- Some LBO contexts when talking about cash available after debt service (careful: LBO models are their own machinery)
- Discussions of dividends and buyback capacity
If you are unsure which one they want, ask: "Are we working unlevered to enterprise value, or levered to equity value?" Asking is stronger than guessing wrong.
Worked intuition
Company EBIT $100, tax 25%, D&A $20, CapEx $25, ΔNWC $5, interest $16.
UFCF = 100 × 0.75 + 20 − 25 − 5 = 65
Interest does not appear in this UFCF bridge because we start from EBIT and use WACC to handle capital structure in the discount rate. A levered build would start from net income (after interest) and then adjust for net borrowing. Different claim, different rate.
Walk it in words: "I taxed EBIT as if unlevered for the cash line, then capture the debt tax shield inside WACC via after-tax cost of debt." That shows where the interest tax shield lives.
Mechanics interviewers poke
Why add back D&A? Non-cash expense deducted to get to EBIT or NI that did not use cash. You still subtract CapEx later because assets must be replaced.
Why subtract ΔNWC? Growth in operating working capital consumes cash. Falling NWC can be a source.
What about SBC? Often treated carefully: non-cash in CFO, but dilutive. Do not casually call SBC "free."
Mid-year convention? Timing assumption on when cash arrives inside the year. Separate from UFCF vs LFCF, but often asked in the same DCF block. See mid-year convention.
Name the claim
Unlevered to all capital, or levered to equity.
Pick the rate
WACC with UFCF, cost of equity with LFCF.
Build the bridge
EBIT path for UFCF, or NI path for LFCF, with CapEx and NWC.
Get to equity
From EV, subtract net debt and other claims; from equity value, you are already there.
Interview prompts
"Walk me through a DCF." Default to UFCF / WACC / EV unless they specify otherwise.
"What is free cash flow?" Clarify unlevered vs levered immediately. Do not give a vague "cash left after expenses" line.
"Would you ever use levered FCF?" Yes, for equity-direct valuation or cash-to-equity discussions, with cost of equity and a clear debt schedule story.
Weak vs strong
Weak
Free cash flow is cash left after expenses. You discount it to get a value.
Strong
I need to know if we mean unlevered or levered. For a standard IB DCF I use UFCF, discount at WACC to enterprise value, then bridge to equity. Levered FCF would pair with cost of equity instead.
30-second verbal
"Unlevered FCF is cash to all capital before debt service; discount at WACC for enterprise value. Levered FCF is cash to equity after interest and net debt flows; discount at cost of equity for equity value. In a standard IB DCF I use UFCF, then subtract net debt. I never mix the pairings."
Practice
Build a DCF and label every cash flow line as unlevered. Write the EV-to-equity bridge underneath. Say the pairing rule until it is automatic. Catalyst-style three-statement and DCF cases on Project Catalyst make the cash line tangible. Pair with WACC and a full DCF walkthrough.
Practice on SheetRank
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